Commit e8353909 authored by Lars-Peter Clausen's avatar Lars-Peter Clausen Committed by Jonathan Cameron
Browse files

staging:iio:ad7793: Mark channels as unsigned 



The values reported by the AD7793 are unsigned.
	In uniploar mode:
			0x000000 is zeroscale
			0xffffff is fullscale
	In bipolar mode:
			0x000000 is negative fullscale
			0x800000 is zeroscale
			0xffffff is positive fullscale

In bipolar mode there is a binary offset, but the values are still unsigned.

Signed-off-by: default avatarLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 421afe58

drivers/staging/iio/adc/ad7793.c

+12 −12
Original line number Diff line number Diff line
@@ -722,7 +722,7 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = { 
			.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |

			IIO_CHAN_INFO_SCALE_SHARED_BIT,

			.scan_index = 0,

			.scan_type = IIO_ST('s', 24, 32, 0)

			.scan_type = IIO_ST('u', 24, 32, 0)

		},

		.channel[1] = {

			.type = IIO_VOLTAGE,
@@ -734,7 +734,7 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = { 
			.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |

			IIO_CHAN_INFO_SCALE_SHARED_BIT,

			.scan_index = 1,

			.scan_type = IIO_ST('s', 24, 32, 0)

			.scan_type = IIO_ST('u', 24, 32, 0)

		},

		.channel[2] = {

			.type = IIO_VOLTAGE,
@@ -746,7 +746,7 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = { 
			.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |

			IIO_CHAN_INFO_SCALE_SHARED_BIT,

			.scan_index = 2,

			.scan_type = IIO_ST('s', 24, 32, 0)

			.scan_type = IIO_ST('u', 24, 32, 0)

		},

		.channel[3] = {

			.type = IIO_VOLTAGE,
@@ -759,7 +759,7 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = { 
			.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |

			IIO_CHAN_INFO_SCALE_SHARED_BIT,

			.scan_index = 3,

			.scan_type = IIO_ST('s', 24, 32, 0)

			.scan_type = IIO_ST('u', 24, 32, 0)

		},

		.channel[4] = {

			.type = IIO_TEMP,
@@ -769,7 +769,7 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = { 
			.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |

			IIO_CHAN_INFO_SCALE_SEPARATE_BIT,

			.scan_index = 4,

			.scan_type = IIO_ST('s', 24, 32, 0),

			.scan_type = IIO_ST('u', 24, 32, 0),

		},

		.channel[5] = {

			.type = IIO_VOLTAGE,
@@ -780,7 +780,7 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = { 
			.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |

			IIO_CHAN_INFO_SCALE_SEPARATE_BIT,

			.scan_index = 5,

			.scan_type = IIO_ST('s', 24, 32, 0),

			.scan_type = IIO_ST('u', 24, 32, 0),

		},

		.channel[6] = IIO_CHAN_SOFT_TIMESTAMP(6),

	},
@@ -795,7 +795,7 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = { 
			.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |

			IIO_CHAN_INFO_SCALE_SHARED_BIT,

			.scan_index = 0,

			.scan_type = IIO_ST('s', 16, 32, 0)

			.scan_type = IIO_ST('u', 16, 32, 0)

		},

		.channel[1] = {

			.type = IIO_VOLTAGE,
@@ -807,7 +807,7 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = { 
			.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |

			IIO_CHAN_INFO_SCALE_SHARED_BIT,

			.scan_index = 1,

			.scan_type = IIO_ST('s', 16, 32, 0)

			.scan_type = IIO_ST('u', 16, 32, 0)

		},

		.channel[2] = {

			.type = IIO_VOLTAGE,
@@ -819,7 +819,7 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = { 
			.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |

			IIO_CHAN_INFO_SCALE_SHARED_BIT,

			.scan_index = 2,

			.scan_type = IIO_ST('s', 16, 32, 0)

			.scan_type = IIO_ST('u', 16, 32, 0)

		},

		.channel[3] = {

			.type = IIO_VOLTAGE,
@@ -832,7 +832,7 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = { 
			.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |

			IIO_CHAN_INFO_SCALE_SHARED_BIT,

			.scan_index = 3,

			.scan_type = IIO_ST('s', 16, 32, 0)

			.scan_type = IIO_ST('u', 16, 32, 0)

		},

		.channel[4] = {

			.type = IIO_TEMP,
@@ -842,7 +842,7 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = { 
			.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |

			IIO_CHAN_INFO_SCALE_SEPARATE_BIT,

			.scan_index = 4,

			.scan_type = IIO_ST('s', 16, 32, 0),

			.scan_type = IIO_ST('u', 16, 32, 0),

		},

		.channel[5] = {

			.type = IIO_VOLTAGE,
@@ -853,7 +853,7 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = { 
			.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |

			IIO_CHAN_INFO_SCALE_SEPARATE_BIT,

			.scan_index = 5,

			.scan_type = IIO_ST('s', 16, 32, 0),

			.scan_type = IIO_ST('u', 16, 32, 0),

		},

		.channel[6] = IIO_CHAN_SOFT_TIMESTAMP(6),

	},

CRA Git | Maintained and supported by SUSTech CRA and CCSE